Axial CT without contrast of the brain (left) shows a marked amount of hydrocephalus, diffuse intracranial calcifications, and no intracranial hemorrhage. A tubular structure is noted in the midline posteriorly between the occipital horns of the lateral ventricles. Lateral image from a cerebral angiogram (right) arterial injection shows enlarged posterior choroidal and lenticulostriate arteries feeding an arteriovenous malformation which drains into enlarged transverse sinuses bilaterally.
Pediatric Imaging 